Question

What is the value of 12(3x +5x) when x=7?

Answer 1

Answer: 672

Explanation:

12(3x+5x) -> 12(3(7)+5(7))

Solve for parentheses, 3(7)=21, 5(7)=35

21+35=56, 56(12)=672

Answer 2

12(3(7)+5(7))
12(21)+(35))
12(56)
684